document.write( "Question 969400: The sum of two sisters ages is 60. One sister is 8 years older than the other. How old are they? And what is the equation I could use to solve the problem? \n" ); document.write( "
Algebra.Com's Answer #592297 by ankor@dixie-net.com(22740)\"\" \"About 
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The sum of two sisters ages is 60.
\n" ); document.write( " One sister is 8 years older than the other.
\n" ); document.write( " How old are they?
\n" ); document.write( ":
\n" ); document.write( "Use two equations
\n" ); document.write( "Two sisters a & b
\n" ); document.write( ":
\n" ); document.write( "write an equation for each statement:
\n" ); document.write( ":
\n" ); document.write( "\"The sum of two sisters ages is 60.\"
\n" ); document.write( "a + b = 60
\n" ); document.write( "\" One sister is 8 years older than the other.\"
\n" ); document.write( "a = b + 8
\n" ); document.write( "or
\n" ); document.write( "a - b = 8
\n" ); document.write( ":
\n" ); document.write( "We can use elimination now
\n" ); document.write( "a + b = 60
\n" ); document.write( "a - b = 8
\n" ); document.write( "--------------adding eliminates b
\n" ); document.write( "2a = 68
\n" ); document.write( "a = 68/2
\n" ); document.write( "a = 34 is the age of one sister
\n" ); document.write( ":
\n" ); document.write( "You can find b I am sure \n" ); document.write( "
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